Tourniquet capable of mechanically timing
The tourniquet with a mechanical timer and an anti-accidental-touch structure solves the problem of inaccurate tourniquet timing in battlefield environments, and automatically prompts to relax after the set time, avoiding ischemia and necrosis of distal limbs.
Patent Information
- Application Number
- CN202422406937.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-30
- Publication Date
- 2025-09-26
- Estimated Expiration
- 2034-09-30
AI Technical Summary
Existing tourniquets are difficult to accurately time in complex environments such as battlefields, can easily lead to ischemia and necrosis of distal limbs, and lack a structure to prevent accidental touch.
A mechanically timed tourniquet was designed, which adopted a mechanical timer and an anti-accidental-touch structure. The tightening and timing of the tourniquet were achieved through a ratchet and gear mechanism. After the set time, a mechanical timing alarm prompted the tourniquet to be relaxed.
Accurate timing and prevention of accidental touch are achieved in complex environments, ensuring that the tourniquet automatically prompts to relax after the set time, avoiding ischemia and necrosis of the distal limbs.
Smart Images
Figure CN223380610U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of hemostatic instruments, in particular to a tourniquet capable of mechanical timing. Background Art
[0002] Tourniquet hemostasis is a simple and effective method of hemostasis used in first aid for severe bleeding in the limbs. It achieves the purpose of hemostasis by compressing blood vessels and blocking blood flow.
[0003] However, if used improperly or for too long, the tourniquet can cause ischemia and necrosis of the distal limbs. Remember to keep track of the time when applying the tourniquet, and loosen it for half a minute to two minutes every half an hour in winter and every hour in summer. Most of the existing tourniquets are loosened by medical staff or patients, and some also use electronic timers. However, on the battlefield, the battlefield environment is difficult and changes rapidly. There is not much energy to time the hemostasis process, and no one will remind the wounded of the time, which can easily cause ischemia and necrosis of the distal limbs. Therefore, the use of mechanical timing is more stable. In addition, in order to ensure the safety of timing, it is also necessary to make sure that the set time will not change again after setting the time. When the time reaches the limit, it can serve as a reminder to the wounded. Utility Model Content
[0004] In order to solve the above problems, the utility model designs a tourniquet with mechanical timing, improves the traditional crowbar structure, and makes tightening the tourniquet more convenient; the use of a mechanical timer can adapt to use in complex environments, and an anti-accidental touch structure is set for the use of the timer to prevent timing errors during the hemostasis process.
[0005] In order to achieve the above technical purpose, the present utility model is realized by the following technical solutions: a mechanically timed tourniquet, comprising a cover shell and a wrapping belt;
[0006] The rear end of the gear train is connected to the gear selector, and the gear train is connected to the gear selector at the rear end thereof of the gear train, and the gear train is connected to the gear selector at the rear end thereof.
[0007] A hole is opened on the upper end shell of the cover shell and a timing knob is installed. The timing knob is connected to the engaging rotating column. A column spring is installed on the outer periphery of the engaging rotating column outside the cover shell. A sealed chamber is provided inside the cover shell at a position corresponding to the timing knob. A mechanical timing alarm is installed inside the sealed chamber. The distance between the central stem of the timing alarm and the engaging rotating column is equal to the length of the engaging rotating column outside the cover shell.
[0008] Furthermore, a slot is provided on a protruding portion on one side of the cover, and the size of the slot is adapted to the diameter of the clamping post;
[0009] Furthermore, the lower end of the engaging rotating column on the timing knob protrudes;
[0010] Furthermore, a groove is formed on the central stem of the mechanical timing alarm, which can be engaged with the protruding portion of the lower end of the engaging rotating column.
[0011] Beneficial effects of the utility model:
[0012] The utility model improves the traditional crowbar structure, making it more convenient to tighten the tourniquet; the use of a mechanical timer can adapt to use in complex environments, and a structure is provided for preventing accidental touch when using the timer, that is, when it is necessary to set the time, it is necessary to press the timing knob so that the engaging rotating column at the lower end of the timing knob engages with the central rotating shaft of the timing alarm to set the time and reset under the action of the column spring, so as to prevent the device from being accidentally touched to change the set time during the hemostasis process. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for describing the embodiments.
[0014] Figure 1 It is an isometric drawing of Example 1 of the present utility model;
[0015] Figure 2 This is a schematic diagram of the internal structure of Example 1 of the present utility model;
[0016] Figure 3 It is a front cross-sectional view of embodiment 1 of the present utility model;
[0017] Figure 4 This is a partial structural diagram of Example 1 of the present utility model;
[0018] Figure 5 This is a partial structural diagram of Example 1 of the present utility model;
[0019] Figure 6 This is a schematic structural diagram of a timing alarm according to Example 1 of the present utility model;
[0020] In the accompanying drawings, the structural names represented by the reference numerals are:
[0021] 1-cover, 2-tightening shaft, 3-winding belt, 4-driven bevel gear, 5-driving bevel gear, 6-control knob, 7-slot, 8-clamping column, 9-timing knob, 10-column spring, 11-engaging rotating column, 12-sealed chamber, 13-mechanical timing alarm, 14-center stem, 15-impact buckle, 16-metal shell, 17-ratchet outside the shell, 18-ratchet pawl, 19-reset spring, 20-side column. DETAILED DESCRIPTION
[0022] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. In addition, the technical features involved in the various embodiments described below can be combined with each other as long as they do not conflict with each other.
[0023] Example 1
[0024] See Figures 1 to 6 As shown, a mechanically timed tourniquet is proposed, comprising a cover 1 and a wrapping band 3;
[0025] A rotatable tightening shaft 2 is installed inside the cover 1, and a winding belt 3 is connected to the middle part of the tightening shaft 2. The other end of the winding belt 3 is connected to a clamping column 8. A driven bevel gear 4 that can drive the tightening shaft 2 to rotate is coaxially installed on the rear end of the cover 1 of the tightening shaft 2. The end of the tightening shaft 2 is located outside the cover 1 and is coaxially connected to an outer ratchet 17 of the shell. A ratchet pawl 18 is matched on the ratchet, and the ratchet pawl 18 is rotatably mounted on the shaft on the side of the cover 1. The tail of the ratchet pawl 18 is connected to a reset spring 19, and the other end of the reset spring 19 is connected to the ratchet On the side column 20 at the lower end of the wheel pawl 18, the cooperation between the outer ratchet 17 and the ratchet pawl 18 can ensure that the winding belt 3 will not loosen after being tightened by the tightening shaft 2. The winding belt 3 can only be loosened when the tail of the ratchet pawl 18 is pressed to disengage the ratchet pawl 18 from the outer ratchet 17. The upper end of the cover 1 is provided with a hole corresponding to the position of the driven bevel gear 4 and is equipped with a control knob 6. The lower end shaft of the control knob 6 is coaxially connected to the driving bevel gear 5. The driving bevel gear 5 and the driven bevel gear 4 are meshed with each other. When it is necessary to tighten the winding belt 3 to stop bleeding, the control knob 6 can be rotated counterclockwise to tighten it.
[0026] A hole is opened on the upper end shell of the cover 1 and a timing knob 9 is installed. The timing knob 9 is connected to the engaging rotating column 11. The engaging rotating column 11 is equipped with a column spring 10 on the outer periphery of the cover 1. A sealed chamber 12 is provided inside the cover 1 at the position corresponding to the timing knob 9. A mechanical timing alarm 13 with a maximum timing time of one hour is installed inside the sealed chamber 12. The distance between the central stem 14 of the timing alarm and the engaging rotating column 11 is equal to the length of the engaging rotating column 11 outside the cover 1. A groove is provided on the central stem 14 of the mechanical timing alarm 13, which can engage with the protruding part of the lower end of the engaging rotating column 11. When the time needs to be set, the timing knob 9 is pressed to engage the engaging rotating column 11 with the central stem 14. When the timing knob 9 is turned, it points to the scale on the cover 1. There are six scales in total. Every time a grid is turned, it means a countdown of 10 minutes. When the set time is up, the impact buckle 15 inside the mechanical timing alarm 13 will hit the metal shell 16 to make a sound.
[0027] When hemostasis is required, the wrapping band 3 is first passed around the proximal end of the wound, the clamping post 8 is clamped in the clamping slot 7, and then the control knob 6 is rotated counterclockwise to drive the tightening shaft 2 to rotate, thereby winding the wrapping band 3 on the tightening shaft 2 to achieve the purpose of tightening. Under the cooperation of the outer ratchet 17 and the ratchet pawl 18, the tightening shaft 2 can only rotate to one side. Then, the timing knob 9 is pressed. When the engaging rotating post 11 is engaged with the central stem 14, the timing knob 9 is rotated again to set the required time. Then the timing knob 9 is released. At this time, the timing knob 9 can be reset under the action of the winding post spring 10 to prevent accidental touch and change of the set time. When the set time is reached, the impact buckle 15 in the mechanical timing alarm will hit its metal shell 16 to achieve the time alarm effect. At this time, pressing the tail of the ratchet pawl 18 can release the outer ratchet 17, so that the wrapping band 3 is loosened, thereby preventing necrosis of the injured limb.
[0028] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the content of this specification.
Claims
1. A mechanically timed tourniquet comprising a housing (1) and a wrapping band (3); characterized in that: A rotatable tightening shaft (2) is installed inside the cover (1), and a winding belt (3) is connected to the middle part of the tightening shaft (2). A driven bevel gear (4) is coaxially installed on the rear part of the tightening shaft (2) inside the cover (1). A hole is opened at the upper end of the cover (1) corresponding to the position of the driven bevel gear (4) and a control knob (6) is installed. A driving bevel gear (5) is coaxially connected to the lower end shaft of the control knob (6). The driving bevel gear (5) and the driven bevel gear (4) are meshed with each other. A hole is opened on the upper end shell of the cover (1) and a timing knob (9) is installed. The timing knob (9) is connected to the meshing rotating column (11). A winding column spring (10) is installed on the periphery of the meshing rotating column (11) outside the cover (1). A mechanical timing alarm (13) is installed inside the sealed chamber (12) in the cover.
2. The mechanically timed tourniquet according to claim 1, characterized in that: A clamping groove (7) is provided at one end of the cover shell (1) away from the tightening shaft (2).
3. The mechanically timed tourniquet according to claim 1, characterized in that: The other end of the winding belt (3) is connected to a clamping column (8) and can be clamped in the clamping slot (7).
4. The mechanically timed tourniquet according to claim 1, characterized in that: The end of the tightening shaft (2) is located outside the housing (1) and is coaxially connected to a ratchet. The ratchet is equipped with a ratchet pawl (18). The ratchet pawl (18) is rotatably mounted on a shaft on the side of the housing (1). The tail of the ratchet pawl (18) is connected to a reset spring (19). The other end of the reset spring (19) is connected to a side column (20) at the lower end of the ratchet pawl (18).
5. The mechanically timed tourniquet according to claim 1, characterized in that: The mechanical timing alarm (13) is installed in a sealed chamber (12) corresponding to the timing knob (9) inside the housing (1). The distance between the central stem (14) of the mechanical timing alarm (13) and the engaging rotating column (11) is equal to the length of the engaging rotating column (11) outside the housing (1). When the timing knob (9) is pressed, the engaging rotating column (11) can engage with the central stem (14) and control its rotation.
6. The mechanically timed tourniquet according to claim 1, characterized in that: The end of the tightening shaft (2) is located outside the housing (1) and is coaxially connected to a ratchet. The ratchet is equipped with a ratchet pawl (18). The ratchet pawl (18) is rotatably mounted on a shaft on the side of the housing (1). The tail of the ratchet pawl (18) is connected to a reset spring (19). The other end of the reset spring (19) is connected to a side column (20) at the lower end of the ratchet pawl (18).